'American Vandal' is another non-serialized seasoned show, meaning you can watch season two without watching season one because it explores an all new storyline. That being said, what are you doing if you haven't seen season one? It's such a good show with what appears to be a ridiculous premise at first. It's a satire of the true-crime genre, however, it's about a ridiculous case: penises keep getting drawn on cars. The show is not as low brow as that case, so don't worry if you think it'll be a silly show. It's not.
Season two starts with an equally weird case that I won't spoil for you, but it's more intense than the first. All I'll say is that this show is highly recommended whether you want to go back to season one or start at season two.